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You searched for: subject:"Neptune (Planet)"
[texts]Report on the history of the discovery of Neptune - Gould, Benjamin Apthorp, 1824-1896

Keywords: Neptune (Planet)
Downloads: 397
[texts]Neptune - Fradin, Dennis B
Presents facts about the large, gaseous planet, from its discovery to the latest findings from the Voyage II space probe which passed by Neptune in 1986
Keywords: Neptune (Planet) -- Juvenile literature; Neptune (Planet)
Downloads: 1
[texts]An investigation of the orbit of Neptune, with general tables of its motion - Newcomb, Simon, 1835-1909

Keywords: Astronomy; Neptune (Planet)
Downloads: 644
[texts]The scientific papers of John Couch Adams - Adams, John Couch, 1819-1892
The metadata below describe the original scanning. Follow the "All Files: HTTP" link in the "View the book" box to the left to find XML files that contain more metadata about the original images and the derived formats (OCR results, PDF etc.). See also the What is the directory structure for the texts? FAQ for information about file content and naming conventions.
Keywords: Astronomy; Neptune (Planet); Geomagnetism; Lunar theory
Downloads: 416
[texts]The scientific papers of John Couch Adams (Volume 1) - Adams, John Couch, 1819-1892
Vol. 1
Keywords: Astronomy; Lunar theory; Geomagnetism; Uranus (Planet); Neptune (Planet)
Downloads: 1,101 5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars(1 review)
[texts]The scientific papers of John Couch Adams .. (Volume 1) - Adams, John Couch, 1819-1892
v. 1 [Original papers published by the author during his lifetime, 1844-1890; ed. by William Grylls Adams, with a memior by J.W.S. Glaisher]--v. 2, pt. 1. Extracts from unpublished manuscripts, ed. by Ralph Allen Sampson, pt. 2. Terrestrial magnetism, ed. by William Grylls Adams
Keywords: Astronomy; Lunar theory; Geomagnetism; Uranus (Planet); Neptune (Planet)
Downloads: 380
[texts]The scientific papers of John Couch Adams [microform] (Volume 2) - Adams, John Couch, 1819-1892
Microfiche
Keywords: Adams, John Couch, 1819-1892; Lunar theory; Science; Geomagnetism; Uranus (Planet); Neptune (Planet)
Downloads: 947
[texts]Continued Analysis of EUVE Solar System Observations - Gladstone, G. Randal
This is the final report for this project. We proposed to continue our work on extracting important results from the EUVE (Extreme UltraViolet Explorer) archive of lunar and jovian system observations. In particular, we planned to: (1) produce several monochromatic images of the Moon at the wavelengths of the brightest solar EUV emission lines; (2) search for evidence of soft X-ray emissions from the Moon and/or X-ray fluorescence at specific EUV wavelengths; (3) search for localized EUV and sof...
Keywords: NEPTUNE (PLANET); CLOUDS (METEOROLOGY); SPATIAL DISTRIBUTION; NEAR INFRARED RADIATION; HUBBLE SPACE TELESCOPE; VERTICAL DISTRIBUTION; LIGHT CURVE
Downloads: 86
[texts]The scientific papers of John Couch Adams [microform] (Volume 1) - Adams, John Couch, 1819-1892
Microfiche
Keywords: Adams, John Couch, 1819-1892; Lunar theory; Science; Geomagnetism; Uranus (Planet); Neptune (Planet)
Downloads: 1,079
[texts]Seventh Copper Mountain Conference on Multigrid Methods - Melson, N. Duane
The Seventh Copper Mountain Conference on Multigrid Methods was held on 2-7 Apr. 1995 at Copper Mountain, Colorado. This book is a collection of many of the papers presented at the conference and so represents the conference proceedings. NASA Langley graciously provided printing of this document so that all of the papers could be presented in a single forum. Each paper was reviewed by a member of the conference organizing committee under the coordination of the editors...
Keywords: NEPTUNE (PLANET); OORT CLOUD; PLUTO (PLANET); PROTOPLANETS; PLANETARY EVOLUTION; ECCENTRICITY; ORBIT CALCULATION; RESONANCE; ASTRONOMICAL MODELS
Downloads: 466
[texts]Astronomical discovery - Turner, H. H. (Herbert Hall), 1861-1930

Keywords: Astronomy -- History; Planets; Aberration; Stars, New; Sunspots; Latitude variation; Neptune (Planet)
Downloads: 2,906
[texts]Aeronautical Engineering A special bibliography with indexes, supplement 7 - NON
Annotated bibliography and indexes on aeronautical engineering and aerodynamics - July 1971
Keywords: JUPITER (PLANET); NEPTUNE (PLANET); PLANETARY COMPOSITION; SATURN (PLANET); URANUS (PLANET); MISSION PLANNING; PLANETARY MASS; PLANETOLOGY
Downloads: 384
[texts]Modification of Eye Movements and Motion Perception during Off-Vertical Axis Rotation - Wood, S. J.
Constant velocity Off-Vertical Axis Rotation (OVAR) imposes a continuously varying orientation of the head and body relative to gravity. The ensuing ocular reflexes include modulation of both torsional and horizontal eye movements as a function of the varying linear acceleration along the lateral plane, and modulation of vertical and vergence eye movements as a function of the varying linear acceleration along the sagittal plane...
Keywords: AEROCAPTURE; TRAJECTORIES; CONVECTIVE HEAT TRANSFER; NAVIER-STOKES EQUATION; RADIATION TRANSPORT; AEROTHERMODYNAMICS; AERODYNAMICS; ATMOSPHERIC MODELS; NEPTUNE (PLANET); MATHEMATICAL MODELS
Downloads: 57
[texts]Science Writers' Guide to TERRA - NON
The launch of NASA's Terra spacecraft marks a new era of comprehensive monitoring of the Earth's atmosphere, oceans, and continents from a single space-based platform. Data from the five Terra instruments will create continuous, long-term records of the state of the land, oceans, and atmosphere. Together with data from other satellite systems launched by NASA and other countries, Terra will inaugurate a new self-consistent data record that will be gathered over the next 15 years...
Keywords: JUPITER (PLANET); NEPHELOMETERS; VOYAGER PROJECT; NEPTUNE (PLANET); URANUS (PLANET); VENUS (PLANET); PLANETARY LIMB; TRITON; SATELLITE ATMOSPHERES; PLANETARY ATMOSPHERES; GALILEO PROJECT
Downloads: 83
[texts]Thermal analysis of melting and freezing of jet and diesel fuels - Moynihan, C. T.
No Abstract Available
Keywords: NUCLEAR ELECTRIC PROPULSION; URANIUM; NUCLEAR REACTORS; OUTER PLANETS EXPLORERS; SPACECRAFT PROPULSION; BOILING; NEPTUNE (PLANET); NITRIDES; NUCLEAR PROPULSION; POTASSIUM
Downloads: 95
[texts]The Aviation System Analysis Capability Noise Impact Model - Ege, Russell A.
To meet its objective of assisting the US aviation industry with the technological challenges of the future, NASA must identify research areas that have the greatest potential for improving the operation of the air transportation system. To accomplish this, NASA is building an Aviation System Analysis Capability (ASAC). The Noise Impact Model (NIM) has been developed as part of the ASAC. Its primary purpose is to enable users to examine the impact that quieter aircraft technologies and/or operat...
Keywords: ABSORPTION SPECTRA; WORLD WIDE WEB; COLLISIONS; DIPOLE MOMENTS; HYDROGEN; PLANETARY ATMOSPHERES; HARMONICS; NEPTUNE (PLANET); TEMPERATURE DEPENDENCE; URANUS (PLANET)
Downloads: 108
[texts]Workshop on Strategies for Calibration and Validation of Global Change Measurements - Guenther, Bruce
The Committee on Environment and Natural Resources (CENR) Task Force on Observations and Data Management hosted a Global Change Calibration/Validation Workshop on May 10-12, 1995, in Arlington, Virginia. This Workshop was convened by Robert Schiffer of NASA Headquarters in Washington, D.C., for the CENR Secretariat with a view toward assessing and documenting lessons learned in the calibration and validation of large-scale, long-term data sets in land, ocean, and atmospheric research programs...
Keywords: IMAGING TECHNIQUES; DEPTH; CHARGE COUPLED DEVICES; CCD CAMERAS; SURVEYS; ECLIPTIC; IMAGES; SOLAR SYSTEM; SCHMIDT TELESCOPES; QUANTUM EFFICIENCY; PIXELS; NEPTUNE (PLANET)
Downloads: 97
[texts]Assimilation of Altimeter Data into a Quasigeostrophic Model of the Gulf Stream System - Capotondi, Antonietta
The dynamical consequences of constraining a numerical model with sea surface height data have been investigated. The model used for this study is a quasigeostrophic model of the Gulf Stream region. The data that have been assimilated are maps of sea surface height obtained as the superposition of sea surface height variability deduced from the Geosat altimeter measurements and a mean field constructed from historical hydrographic data...
Keywords: MICROPARTICLES; ELECTRIC POTENTIAL; BROADBAND; WAVEFORMS; PLASMA WAVES; DUST; SPACE EXPLORATION; VOYAGER 1 SPACECRAFT; VOYAGER 2 SPACECRAFT; URANUS (PLANET); NEPTUNE (PLANET)
Downloads: 83
[texts]What Happens to bone health during and after spaceflight - Sibonga, Jean D.
Weightless conditions of space flight accelerate bone loss. There are no reports to date that address whether the bone that is lost during spaceflight could ever be recovered. Spaceinduced bone loss in astronauts is evaluated at the Johnson Space Center (JSC) by measurement of bone mineral density (BMD) by Dual-energy x-ray absorptiometry (DXA) scans. Astronauts are routinely scanned preflight and at various time points postflight (greater than or equal to Return2 days)...
Keywords: AEROCAPTURE; ATMOSPHERIC ENTRY; NAVIGATION; NEPTUNE (PLANET); SPACE MISSIONS; NASA SPACE PROGRAMS; FLIGHT PATHS; ORBIT INSERTION; FEASIBILITY ANALYSIS; SOLAR ELECTRIC PROPULSION
Downloads: 63
[texts]Design guide for high pressure oxygen systems - Bond, A. C.
A repository for critical and important detailed design data and information, hitherto unpublished, along with significant data on oxygen reactivity phenomena with metallic and nonmetallic materials in moderate to very high pressure environments is documented. This data and information provide a ready and easy to use reference for the guidance of designers of propulsion, power, and life support systems for use in space flight...
Keywords: ASTEROIDS; SATURN (PLANET); URANUS (PLANET); COMETS; INTERPLANETARY DUST; PLANETARY ENVIRONMENTS; SPACECRAFT CONFIGURATIONS; ATMOSPHERIC EFFECTS; JUPITER (PLANET); NEPTUNE (PLANET); PLUTO (PLANET)
Downloads: 409
[texts]Human Factors Engineering as a System in the Vision for Exploration - Whitmore, Mihriban
In order to accomplish NASA's Vision for Exploration, while assuring crew safety and productivity, human performance issues must be well integrated into system design from mission conception. To that end, a two-year Technology Development Project (TDP) was funded by NASA Headquarters to develop a systematic method for including the human as a system in NASA's Vision for Exploration. The specific goals of this project are to review current Human Systems Integration (HSI) standards (i.e., industry...
Keywords: AEROCAPTURE; SYSTEMS ANALYSIS; LOADS (FORCES); AERODYNAMIC HEATING; AEROTHERMODYNAMICS; COMPUTATIONAL FLUID DYNAMICS; INTERPLANETARY NAVIGATION; NAVIGATION; MISSION PLANNING; NEPTUNE (PLANET); AEROSHELLS; THERMAL PROTECTION
Downloads: 17
[texts]Recovery and Utilization of Extraterrestrial Resources - NON
This special bibliography includes the extraction, processing, and utilization of lunar, planetary, and asteroid resources; mining and excavation equipment, oxygen and propellant production; and in situ resource utilization.
Keywords: ALGORITHMS; SPACE MISSIONS; LIFT DRAG RATIO; ELLIPTICAL ORBITS; TRAJECTORIES; AEROCAPTURE; ANGLE OF ATTACK; NEPTUNE (PLANET); CONTROL THEORY; TERMINAL GUIDANCE; MONTE CARLO METHOD; CALCULUS OF VARIATIONS; AERODYNAMIC FORCES
Downloads: 80
[texts]Mechanisms of Gravity-Evoked Neuronal Plasticity - Kalb, Rober
The grant focuses on a gene we identified called, serum and glucocorticoid- induced kinase (SGK), during a previously funded NASA project. The abundance of SGK messenger RNA (mRNA) and protein is increased in CNS tissues from animals reared in microgravity in comparison with 1G reared animals. In the funded proposal we had three aims: 1) characterize the distribution of SGK mRNA in the developing and adult rat CNS, 2) determine if expression of enzymatically active or inactive forms of SGK in ce...
Keywords: SOLAR ORBITS; SPACE DEBRIS; PROBABILITY THEORY; SOLAR SYSTEM EVOLUTION; NEAR EARTH OBJECTS; COMETARY COLLISIONS; PLANETARY GRAVITATION; MATHEMATICAL MODELS; NUMERICAL ANALYSIS; ORBITAL ELEMENTS; NEPTUNE (PLANET); JUPITER (PLANET)
Downloads: 75
[texts]Infrared Spectroscopy of Matrix-Isolated Polycyclic Aromatic Compounds and their Ions - Mattioda, A. L.
The matrix-isolation technique has been employed to measure the mid-infrared spectra of several polycyclic aromatic nitrogen heterocycles in both neutral and cationic forms. The species studied include: 7,8 benzoquinoline (C13H9N); 2-azapyrene (C15H9N); 1- and 2-azabenz(a)anthracene (C17H11N); and 1-, 2-, and 4-azachrysene (also C17H11N). The experimentally measured band frequencies and intensities for each molecule are tabulated and compared with their theoretically calculated values computed u...
Keywords: AEROCAPTURE; SPACE NAVIGATION; SPACECRAFT GUIDANCE; SYSTEMS ANALYSIS; THERMAL PROTECTION; AEROTHERMODYNAMICS; SPACECRAFT DESIGN; ORBIT INSERTION; SPACECRAFT MANEUVERS; OUTER PLANETS EXPLORERS; TITAN; NEPTUNE (PLANET); SPACECRAFT CONTROL
Downloads: 88
[texts]The Hard X-ray 20-40 keV AGN Luminosity Function - Beckmann, V.
We have compiled a complete, significance limited extragalactic sample based on approximately 25,000 deg(sup 2) to a limiting flux of 3 x 10(exp -11) ergs per square centimeter per second. (approximately 7,000 deg(sup 2)) to a flux limit of 10(exp -11) ergs per square centimeter per second)) in the 20 - 40 keV band with INTEGRAL. We have constructed a detailed exposure map to compensate for effects of non-uniform exposure...
Keywords: SYSTEMS ANALYSIS; MISSION PLANNING; LOADS (FORCES); THERMAL PROTECTION; AEROSHELLS; AEROCAPTURE; ATMOSPHERIC MODELS; COMPUTATIONAL FLUID DYNAMICS; NEPTUNE (PLANET); SPACECRAFT DESIGN; SYSTEMS ENGINEERING; AERODYNAMIC HEATING
Downloads: 55
[texts]Achievements in the field of space materials science and their usage in industry - Konradi, G. G.
Development of space engineering products for use in aerospace environments and their usage in industry
Keywords: FLYBY MISSIONS; SPACE MISSIONS; URANUS (PLANET); INTERPLANETARY TRAJECTORIES; PLANETARY GRAVITATION; SPACECRAFT TRAJECTORIES; INTERPLANETARY TRANSFER ORBITS; JUPITER (PLANET); NEPTUNE (PLANET); PLUTO (PLANET); SATURN (PLANET)
Downloads: 95
[texts]Qualification and Issues with Space Flight Laser Systems and Components - Ott, Melanie N.
The art of flight quality solid-state laser development is still relatively young, and much is still unknown regarding the best procedures, components, and packaging required for achieving the maximum possible lifetime and reliability when deployed in the harsh space environment. One of the most important issues is the limited and unstable supply of quality, high power diode arrays with significant technological heritage and market lifetime...
Keywords: AEROCAPTURE; TRAJECTORIES; TURBULENT HEAT TRANSFER; LOADS (FORCES); HEAT FLUX; SYSTEMS ANALYSIS; AEROSHELLS; ATMOSPHERIC ENTRY; ANGLE OF ATTACK; NEPTUNE ATMOSPHERE; NEPTUNE (PLANET); STAGNATION POINT; CONVECTIVE HEAT TRANSFER
Downloads: 122
[texts]X-Ray Variability Coherence: How to Compute It, What It Means, and How It Constrains Models of GX 339-4 and Cygnus X-1 - Vaughan, Brian A.
We describe how the coherence function, a Fourier frequency-dependent measure of the linear correlation between time series measured simultaneously in two energy channels, can be used in conjunction with energy spectra, power spectra, and time delays between energy channels to constrain models of the spectrum and variability of X-ray binaries. Here we present a procedure for estimating the coherence function in the presence of counting noise...
Keywords: PLANETARY EVOLUTION; OORT CLOUD; REGIONS; NEPTUNE (PLANET); SOLAR SYSTEM; COMETS; KUIPER BELT; SOLAR SYSTEM EVOLUTION; COMETARY COLLISIONS; PERTURBATION; MANY BODY PROBLEM
Downloads: 66
[texts]High Fidelity Simulations for Unsteady Flow Through the Orbiter LH2 Feedline Flowliner - Kiris, Cetin C.
High fidelity computations were carried out to analyze the orbiter M2 feedline flowliner. Various computational models were used to characterize the unsteady flow features in the turbopump, including the orbiter Low-Pressure-Fuel-Turbopump (LPFTP) inducer, the orbiter manifold and a test article used to represent the manifold. Unsteady flow originating from the orbiter LPFTP inducer is one of the major contributors to the high frequency cyclic loading that results in high cycle fatigue damage to...
Keywords: AEROCAPTURE; ORBIT INSERTION; NEPTUNE (PLANET); CENTER OF GRAVITY; FEASIBILITY; SYSTEMS ANALYSIS; FLYBY MISSIONS; AERODYNAMIC CHARACTERISTICS; AERODYNAMIC CONFIGURATIONS; AERODYNAMIC STABILITY; ANGLE OF ATTACK; STABILITY TESTS
Downloads: 73
[texts]Three-dimensional ring current decay model - Fok, Mei-Ching
This work is an extension of a previous ring current decay model. In the previous work, a two-dimensional kinetic model was constructed to study the temporal variations of the equatorially mirroring ring current ions, considering charge exchange and Coulomb drag losses along drift paths in a magnetic dipole field. In this work, particles with arbitrary pitch angle are considered. By bounce averaging the kinetic equation of the phase space density, information along magnetic field lines can be in...
Keywords: COLOR PHOTOGRAPHY; JUPITER (PLANET); MARS (PLANET); MERCURY (PLANET); MOON; NEPTUNE (PLANET); PLUTO (PLANET); SATURN (PLANET); SUN; URANUS (PLANET); VENUS (PLANET); EARTH SCIENCES; EDUCATION; INFORMATION MANAGEMENT; NASA SPACE PROGRAMS; PHOTOLITHOGRAPHY; SOLAR SYSTEM; ASTEROIDS; EARTH (PLANET)
Downloads: 96
[texts]Advanced Resistive Exercise Device (ARED) Man-In-The-Loop Test (MILT) - Bentley, Jason R.
The interim Resistive Exercise Device (iRED) is currently being flown aboard the International Space Statrion to mitigate the loss of muscle mass and muscular strength associated with long-duration exposure to microgravity. However, iRED is limited in the maximal loads that it can provide, and thus, is viewed as an interim solution to the loss of muscular strength. Thus, NASA has initiated the design and construction of the Advanced Resistive Exercise Device (ARED as a long-term solution to the ...
Keywords: AEROCAPTURE; EXTREMELY HIGH FREQUENCIES; LIFT DRAG RATIO; SOLAR ELECTRIC PROPULSION; THERMAL PROTECTION; NEPTUNE (PLANET); SPACECRAFT DESIGN; GENERAL OVERVIEWS; SPACE MISSIONS; SYSTEMS ANALYSIS; AEROSHELLS; ATMOSPHERIC ENTRY; DELTA 4 HEAVY LAUNCH VEHICLE
Downloads: 82
[texts]NASALife-Component Fatigue and Creep Life Prediction Program and Illustrative Examples - Murthy, Pappu L. N.
NASALife is a life prediction program for propulsion system components made of ceramic matrix composites (CMC) under cyclic thermo-mechanical loading and creep rupture conditions. Although, the primary focus was for CMC components the underlying methodologies are equally applicable to other material systems as well. The program references data for low cycle fatigue (LCF), creep rupture, and static material properties as part of the life prediction process...
Keywords: AEROCAPTURE; ANGLE OF ATTACK; ATMOSPHERIC DENSITY; FLIGHT SIMULATION; PROBABILITY THEORY; FLIGHT CONTROL; NEPTUNE (PLANET); TRITON; SPACE EXPLORATION; SYSTEMS ANALYSIS; SPACE MISSIONS; INTERPLANETARY TRAJECTORIES; LIFT DRAG RATIO; MONTE CARLO METHOD
Downloads: 141
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